Bromide and Other Halide Ion Removal From Drinking Waters Using Silver-Amended Coagulation

Wenhui Gan, Arjun K. Venkatesan, Onur G. Apul, Francois Perreault, Xin Yang, Paul Westerhoff

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

High bromide ion concentrations are of concern because of formation of brominated disinfection byproducts in drinking water, which may be more toxic than their chlorinated analogs. Jar tests dosed with alum and silver were performed on several water samples with chloride-to-bromide (Cl:Br) ratios ranging from 15 to 866 mg Cl/mg Br. In lower-chloride waters (15 mg Cl/mg Br), silver-amended coagulation (SAC) removed 20–90% of the initial bromide. In higher-chloride water (525 mg Cl/mg Br), a silver dose of 15 mol Ag/mol Br achieved 40% bromide removal. Iodide and chloride removal also occurred during silver addition. SAC did not influence total organic carbon or turbidity removal, and residual silver was below the secondary maximum contaminant level but was successful in decreasing trihalomethane (THM) formation from 44 to 28 μg/L by shifting away from brominated THM species. SAC may only be applicable and cost-effective in a narrow range of waters with lower Cl:Br ratios, and other technologies should be developed for waters with >300 mg Cl/mg Br.

Original languageEnglish (US)
Pages (from-to)13-24
Number of pages12
JournalJournal - American Water Works Association
Volume110
Issue number6
DOIs
StatePublished - Jun 1 2018

Fingerprint

halide
Coagulation
Bromides
bromide
Silver
Drinking Water
coagulation
silver
drinking water
Ions
Chlorides
ion
chloride
Trihalomethanes
Water
water
Poisons
Disinfection
iodide
Iodides

Keywords

  • bromide removal
  • chlorine
  • disinfection

ASJC Scopus subject areas

  • Chemistry(all)
  • Water Science and Technology

Cite this

Bromide and Other Halide Ion Removal From Drinking Waters Using Silver-Amended Coagulation. / Gan, Wenhui; Venkatesan, Arjun K.; Apul, Onur G.; Perreault, Francois; Yang, Xin; Westerhoff, Paul.

In: Journal - American Water Works Association, Vol. 110, No. 6, 01.06.2018, p. 13-24.

Research output: Contribution to journalArticle

@article{53eddf0553db4f6fb6e350c0814170bc,
title = "Bromide and Other Halide Ion Removal From Drinking Waters Using Silver-Amended Coagulation",
abstract = "High bromide ion concentrations are of concern because of formation of brominated disinfection byproducts in drinking water, which may be more toxic than their chlorinated analogs. Jar tests dosed with alum and silver were performed on several water samples with chloride-to-bromide (Cl:Br) ratios ranging from 15 to 866 mg Cl/mg Br. In lower-chloride waters (15 mg Cl/mg Br), silver-amended coagulation (SAC) removed 20–90{\%} of the initial bromide. In higher-chloride water (525 mg Cl/mg Br), a silver dose of 15 mol Ag/mol Br achieved 40{\%} bromide removal. Iodide and chloride removal also occurred during silver addition. SAC did not influence total organic carbon or turbidity removal, and residual silver was below the secondary maximum contaminant level but was successful in decreasing trihalomethane (THM) formation from 44 to 28 μg/L by shifting away from brominated THM species. SAC may only be applicable and cost-effective in a narrow range of waters with lower Cl:Br ratios, and other technologies should be developed for waters with >300 mg Cl/mg Br.",
keywords = "bromide removal, chlorine, disinfection",
author = "Wenhui Gan and Venkatesan, {Arjun K.} and Apul, {Onur G.} and Francois Perreault and Xin Yang and Paul Westerhoff",
year = "2018",
month = "6",
day = "1",
doi = "10.1002/awwa.1049",
language = "English (US)",
volume = "110",
pages = "13--24",
journal = "Journal of the American Water Works Association",
issn = "0003-150X",
publisher = "American Water Works Association",
number = "6",

}

TY - JOUR

T1 - Bromide and Other Halide Ion Removal From Drinking Waters Using Silver-Amended Coagulation

AU - Gan, Wenhui

AU - Venkatesan, Arjun K.

AU - Apul, Onur G.

AU - Perreault, Francois

AU - Yang, Xin

AU - Westerhoff, Paul

PY - 2018/6/1

Y1 - 2018/6/1

N2 - High bromide ion concentrations are of concern because of formation of brominated disinfection byproducts in drinking water, which may be more toxic than their chlorinated analogs. Jar tests dosed with alum and silver were performed on several water samples with chloride-to-bromide (Cl:Br) ratios ranging from 15 to 866 mg Cl/mg Br. In lower-chloride waters (15 mg Cl/mg Br), silver-amended coagulation (SAC) removed 20–90% of the initial bromide. In higher-chloride water (525 mg Cl/mg Br), a silver dose of 15 mol Ag/mol Br achieved 40% bromide removal. Iodide and chloride removal also occurred during silver addition. SAC did not influence total organic carbon or turbidity removal, and residual silver was below the secondary maximum contaminant level but was successful in decreasing trihalomethane (THM) formation from 44 to 28 μg/L by shifting away from brominated THM species. SAC may only be applicable and cost-effective in a narrow range of waters with lower Cl:Br ratios, and other technologies should be developed for waters with >300 mg Cl/mg Br.

AB - High bromide ion concentrations are of concern because of formation of brominated disinfection byproducts in drinking water, which may be more toxic than their chlorinated analogs. Jar tests dosed with alum and silver were performed on several water samples with chloride-to-bromide (Cl:Br) ratios ranging from 15 to 866 mg Cl/mg Br. In lower-chloride waters (15 mg Cl/mg Br), silver-amended coagulation (SAC) removed 20–90% of the initial bromide. In higher-chloride water (525 mg Cl/mg Br), a silver dose of 15 mol Ag/mol Br achieved 40% bromide removal. Iodide and chloride removal also occurred during silver addition. SAC did not influence total organic carbon or turbidity removal, and residual silver was below the secondary maximum contaminant level but was successful in decreasing trihalomethane (THM) formation from 44 to 28 μg/L by shifting away from brominated THM species. SAC may only be applicable and cost-effective in a narrow range of waters with lower Cl:Br ratios, and other technologies should be developed for waters with >300 mg Cl/mg Br.

KW - bromide removal

KW - chlorine

KW - disinfection

UR - http://www.scopus.com/inward/record.url?scp=85047565296&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85047565296&partnerID=8YFLogxK

U2 - 10.1002/awwa.1049

DO - 10.1002/awwa.1049

M3 - Article

VL - 110

SP - 13

EP - 24

JO - Journal of the American Water Works Association

JF - Journal of the American Water Works Association

SN - 0003-150X

IS - 6

ER -